First off, it's nowhere near silent. I can hear the wheel spinning loudly through my apartment.
Secondly, I just woke up and its 5am. I noticed the wheel fell over so I went to fix it. Turns out the middle piece completely came off and I cannot find it ANYWHERE in the cage. I'm thinking my hamster ate it. She seems okay in herself but that much plastic for such a small little hamster is definitely not good. The wheel shouldn't have come apart that easy and I am very disappointed and stressed as my hamster is now without a wheel and may possibly need a vet visit.